The system of values or principles by which one lives by. A result of combining one's steelo and steez. The reflection of one's steezo most often arises when he/she is placed in a situation where crucial decisions are required.

Jerry: She's into it.

George: Into what?

Jerry: The menage.

George: That's unbelievable!

Jerry: Oh, it's a scene man.

George: Do you ever just get down on your knees and thank god that you know me and have access to my dementia?

Jerry: What are you talking about? I'm not gonna to do it!

George: You're not doin' it? What do you mean, you're not goin to do it?!

Jerry: I can't. I'm not an orgy guy!

George: Are you crazy?! This is like discovering plutonium...by accident!

Jerry: Don't you know what it means to become an orgy guy? It changes everything. I'd have to dress different. I'd have to act different. I'd have to grow a moustache and get all kinds of robes and lotions and I'd need a new bedspread and new curtains. I'd have to get thick carpeting and weirdo lighting...

As you can see, the orgy scene was not in accordance with Seinfeld's steezo.